<template>
    <div>
        <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>用户管理</el-breadcrumb-item>
    <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
        <!-- 搜索添加区域 -->
     <el-row :gutter="20">
        <el-col :span="8">
            <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
             </el-input>
        </el-col>
        <el-col :span="4">
            <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
     </el-row>
     <!-- 用户列表 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
            <template slot-scope="scope">
                <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
            </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
            <template slot-scope="scope">
                <!-- 修改按钮 -->
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                <!-- 删除按钮 -->
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                <!-- 分配角色 -->
                 <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                 </el-tooltip>
            </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
       <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[1, 2, 5, 10]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible"
    width="30%" @close="addDialogClose">

    
    <!-- 内容主体区 -->
     <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username" ></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password" ></el-input>
        </el-form-item>
        <el-form-item label="Email" prop="email">
            <el-input v-model="addForm.email" ></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile" ></el-input>
        </el-form-item>
     </el-form>


    <!-- 底部区域 -->
    <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
    </span>
    </el-dialog>
<!-- 修改用户对话框  -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible"
  width="30%" @close="editDialogClosed">
  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef">
    <el-form-item label="用户名">
        <el-input v-model="editForm.username" disabled></el-input>
    </el-form-item>
    <el-form-item label="邮箱" prop="email">
        <el-input v-model="editForm.email"></el-input>
    </el-form-item>
    <el-form-item label="手机" prop="mobile">
        <el-input v-model="editForm.mobile"></el-input>
    </el-form-item>
  </el-form>
    <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
    </span>
    </el-dialog>    

    <!-- 分配角色对话框 -->
    <el-dialog
    title="分配角色"
    :visible.sync="setRoleDialogVisible"
    width="50%" @close="setRoleDialogClosed">
    <div>
        <p>当前的用户：{{ userInfo.username }}</p>
        <p>当前的角色：{{ userInfo.role_name }}</p>
        <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
                <el-option v-for="item in rolesList"
                    :key="item.id" :label="item.roleName" :value="item.id">
                </el-option>
            </el-select>
        </p>
    </div>
    <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
    </span>
    </el-dialog>
    </div>
</template>

<script>
    export default {
        data(){
            // 验证邮箱的规则
            var checkEmail=(rule,val,cb)=>{
                // 验证邮箱正则表达式
                const regEmail=/^([a-zA-z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
                if (regEmail.test(val)){
                // 合法的邮箱
                return cb()
                }
                cb(new Error('请输入合法的邮箱'))

            }
            // 验证手机号的规则
            var checkMobile=(rule,val,cb)=>{
                const regMobile=/^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
                if(regMobile.test(val)){
                    return cb()
                }
                cb(new Error('请输入合法的手机号'))
            }
            return{
                // 获取用户列表的参数对象
                queryInfo:{
                    query:'',
                    pagenum:1,
                    pagesize:2
                },
                userlist:[],
                total:0,
                // 控制添加用户对话框的显示与隐藏
                addDialogVisible:false,
                // 添加用户的表单数据
                addForm:{
                    username:'',
                    password:'',
                    email:'',
                    mobile:''
                },
                // 添加表单的验证规则对象
                addFormRules:{
                    username:[
                    {required:true, message:'请输入用户名',trigger:'blur'},{
                        min:3,max:10,message:'用户名长度在3~10个字符之间',trigger:'blur'
                    }
                    ],
                    password:[
                    {required:true, message:'请输入密码',trigger:'blur'},{
                        min:6,max:15,message:'用户名长度在6~15个字符之间',trigger:'blur'
                    }
                    ],
                    email:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},{
                        validator:checkEmail,trigger:'blur'
                    }

                    ],
                    mobile:[
                    {required:true,message:'请输入手机',trigger:'blur'},{
                        validator:checkMobile,trigger:'blur'
                    }
                    ]
                },
                //控制修改用户对话框的显示与隐藏
                editDialogVisible:false,
                //查询到的用户信息对象
                editForm:{},

                //修改表单的验证规则对象
                editFormRules:{
                email:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},{
                        validator:checkEmail,trigger:'blur'
                    }

                    ],
                    mobile:[
                    {required:true,message:'请输入手机',trigger:'blur'},{
                        validator:checkMobile,trigger:'blur'
                    } 
                    ]  
                },

                //控制分配角色对话框显示与隐藏
                setRoleDialogVisible:false,
                //需要被分配角色的用户信息
                userInfo:{},
                //所有角色的数据列表
                rolesList:[],
                //已选中角色的ID值
                selectedRoleId:''
            }
        },
        created(){
            this.getUserList()
        },
        methods:{
            async getUserList() {
               const {data:res}= await this.$http.get('users',{params:this.queryInfo})
            if(res.meta.status !=200) {
                return this.$message.error('获取用户列表失败')
            }
            this.userlist=res.data.users
            this.total=res.data.total
            },
            // 监听pagesize改变的事件
            handleSizeChange(newSize){
                this.queryInfo.pagesize=newSize
                this.getUserList();
            },
            //监听页码值改变的事件
            handleCurrentChange(newPage){
                this.queryInfo.pagenum=newPage
                this.getUserList();
            },
            // 监听switch开关状态的改变
            async userStateChanged(userinfo){
               const {data:res}=await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
               if(res.meta.status !==200){
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败!')
               }
               this.$message.success('更新用户状态成功!')

            },
            //监听新增用户对话框关闭事件
            addDialogClose(){
                this.$refs.addFormRef.resetFields()
            },
            //添加新用户按钮事件
            addUser(){
                this.$refs.addFormRef.validate( async valid=>{
                    if(!valid) return
                    //可以发起添加用户网络请求
                 const {data:res}=await this.$http.post('users',this.addForm)
                 if(res.meta.status!=201){
                    this.$message.error('添加用户失败!')
                 }
                    this.$message.success('添加用户成功!')
                    // 隐藏添加的对话框
                    this.addDialogVisible = false
                    //从新获取用户的列表
                    this.getUserList()
                })

            },
            // 展示编辑用户对话框
            async showEditDialog(id){
                // console.log(id);
                const {data:res}=await this.$http.get('users/'+id)
                if(res.meta.status !==200){
                    return this.$message.error('查询用户信息失败!')

                }
                this.editForm=res.data
                this.editDialogVisible = true
                
                
            },

            //监听修改用户对话框的关闭事件
            editDialogClosed(){
                this.$refs.editFormRef.resetFields()
            },
            //修改用户信息并提交
            editUserInfo(){
                this.$refs.editFormRef.validate( async valid=>{
                    if(!valid) return
                    //发起修改用户信息的请求
                 const {data: res}= await this.$http.put('users/' + this.editForm.id,
                 {  email:this.editForm.email,
                    mobile:this.editForm.mobile
                })
                if(res.meta.status !==200){
                return this.$message.error('更新用户信息失败!')
                }
                // 关闭对话框
                this.editDialogVisible = false
                // 刷新数据列表
                this.getUserList()
                // 提示修改成功
                this.$message.success('更新用户信息成功！')
                })
            },
            //根据id删除用户信息
            async removeUserById(id){
                //弹框询问是否删除数据
               const confirmResult = await this.$confirm('此操作将永久删除此用户，是否继续？','提示',
                {
                    confirmButtonText:'确定',
                    cancelButtonText:'取消',
                    type:'Warning'

                }).catch(err=>err)
                // 如果用户确认删除，返回值为字符串confirm
                // 如果用户取消删除，返回值为字符串cancel
                console.log(confirmResult)
                if(confirmResult!=='confirm'){
                    return this.$message.info('已取消删除！')
                }
                const {data:res}=await this.$http.delete('users/'+id)
                if(res.meta.status !==200){
                    return this.$message.error('删除用户失败！')
                }
                this.$message.success('删除用户成功!')
                this.getUserList()

            },
            //展示分配角色对话框
            async setRole(userInfo){
                this.userInfo=userInfo
                //展示对话框之前获取角色数据
                const {data:res} = await this.$http.get('roles')
                if(res.meta.status!==200){
                    return this.$message.error('获取角色列表失败！')
                }
                this.rolesList = res.data

                this.setRoleDialogVisible = true
            },
            //点击按钮分配角色
            async saveRoleInfo(){
                if(!this.selectedRoleId){
                    return this.$message.error('请选择要分配的角色！')
                }
                const {data:res}=await this.$http.put(`users/${this.userInfo.id}/role`,{
                    rid:this.selectedRoleId
                })
                if(res.meta.status!==200){
                    return this.$message.error('更新角色失败！')
                }
                this.$message.success('更新角色成功！')
                this.getUserList()
                this.setRoleDialogVisible=false

            },
            //监听分配角色的对话框关闭事件
            setRoleDialogClosed(){
                this.selectedRoleId=''
                this.userInfo={}
            }
        }
    }
</script>

<style lang="less" scoped>

</style>